Method of and means for permanently waving hair



R I A H G N M W Y L T m s m N m VP LF Rm A E M A F o D O H T E M May 2, 1193?,

Origin'al Filed Jam. 21, 1932 INVENTOR M A'ITORNEYS A 1 m3 they RALPH L. EVANS, Q1 EGEW YUBE, N. ZZZ, ASSIG'NOB T0 ZOTOS GURPGR'AEKTIUN, U35" NEW YQRZZ, N. 1 A CURL QRATIQN GE NEW YQRK AND MEANS FOR PEEIJIANENTLY WAVIHG Original application January 21, 193%, Serial l lo. 58?,890. Divided and this application filed June 3,

This invention relates to that class of hair waving in which a so called permanent wave is imparted to a pie-formed tress of hair by subjecting the tress to the action of a heating chemical, such as calcium oxide, which, when moistened, will of itself generate suthcient heat to impart a permanent wave to the said tress.

Ifhis invention comprises a novel method of and a novel means for preventing the swelling of the self heating chemical when moistened, as for instance by the introduction of another suitable chemical.

I have found that the swelling of the heating chemical and the bursting of the pad, when the heating chemical is used in a pad, may be prevented by combining with the heating chemical a salt, such as ammonium sulphate; or by combining with the heating chemical a solution containing a salt, such as ammonium sulphate.

An example of a hair waving pad embodying my invention is represented in the accompanying drawing in which:

Fig. 1 representsan inside plan view of the pad in its unwrapped condition, the inner absorbent sheet being shown at the side of the pad and the inner wrapper sheet being. shown unfolded;

Fig, 2 represents an inside plan view of the pad in its unwrapped condition after the inner wrapper flap has been perforated and the inner face of the chemical containing envelope has been perforated, the inner absorbent sheet being shown interposed between the inner face of the heating chemical containing envelope and the inner wrapper flap;

Fig. 3 represents a side view of the pad wrgtpped around a wound tress as in use; an

Fig. 4: represents a longitudinal central section through the wrappedpad.

The outer wrapper of the self waving pad is denoted by 1 and is preferably made of non-absorbent material, as for instance paper. The inner wrapper is denoted by 2 and is preferably made of metal foil. This inner wrapper is provided with a foldable flap 3. An envelope 4 composed of a per- Serial dered form, which chemical, when moistoned, will of itself generate sufilcient heat to impart a so called permanent wave to a pro-formed tress when enclosed withm the pad.

An inner removable sheet 5 of absorbent 60 material, such as cotton fabric is arranged to be moistened and inserted between the flap 3 and the envelope 4 after the inner face of the envelope 4; and the folded over flap 3 of the inner wrapper have been perforated. The pressing of the flap back into place will squeeze the moisture fromthe wet-ted inner sheet into the envelope containing the heating chemical.

In practice, the tress 6 is wound as usual around a mandrel 7. The tress may be moistened either before or after it is wound, by a suitable Waving solution, such for instance as an ammonia solution. The'inner face of the impervious envelope 4r containing the hair waving chemical is perforated as shown at 8, and the folded over flap 3 of the inner wrapper may be perforated at the same time as shown at 9. The inner sheetb is moistened by water or by. a suitable hair waving solution, such as that used for .moistening the tress 6.

Either the solution or the s'eli heating chemical within. the envelope may be treated to produce the results hereinbefore set forth.

The pad is then wrapped around the preformed tress and is preferably secured in position at the scalp end of the tress by a suitable scalp protecting guard of well known or approved form, such rminstance 99 as the self locking guard 10 showninthe accompanying drawing, The outer end of the pad may be secured around the mandrel 7, as for instance by twisting. the outer wrapper of the pad around the same. The exo- 95 thermic action starts at once because of the application of moisture by the wetted inner sheet 5 of the pad to the selfheating chemical through the perforations in the inner face of the impervious envelope. Heat is 100 then set up within the pad in order to imart a so called permanent wave-to the preormed tress without requiring application of heat from an outside source. It will be seen that the outside wrapper of the pad serves to confine the heat to a large extent within the pad the steam generated by the combination 0% the treating solution with the chemical being permitted to escape through the crimped outer end of the outer wrapper. I

This application is a division of my coending application filed January 21, 1932, rial No. 587,890, entitled Method of and means for permanently waving hair.

What I claim is:

1. The method of waving hair comprising subjecting the hair to the action of a chemical which, when moistened, will generate suflicient heat to impart a permanent wave to the hair, and preventing the swelling of the chemical when moistened.

2. The method of waving hair comprising wave to the hair, and means for preventing the swelling of the chemical, said means including ammonium sulphate combined in its dry state with the heating chemical.

9. 'Means for waving hair including a chemical which, when moistened, will generate suiiicient heat to impart a permanent wave to the hair, and means for preventing the swelling of the chemical, said means including a solution of ammonium sulphate combined with the heating chemical.

In testimony, that I claim the foregoing as my invention, I have signed my name this 2nd day of June, 1932.

RALPH L. EVANS.

subjectin the hair to the action of a chemical whic when moistened, will generate sufficient heat to impart a permanent Wave to the hair, and preventing the swelling of the chemical when moistened, by combining a suitable salt therewith.

3. The method of waving hair comprising subjecting the hair to the action of a chemical which, when moistened, will generate sufiicient heat to impart apermanent wave to the hair, and preventing the swelling of the chemical when moistened by combining ammonium sulphate with the heating chemical.

4:. The method of waving hair comprising subjecting the hair to the action of a chemical which, when moistened, will generate suificient heat to impart a permanent wave to the hair, and preventing the swelling of the chemical when moistened by combining with the heating chemical, a solution containing ammonium sulphate.

5. Means for waving hair including a chemical which, when moistened, will generate sufiicient heat to impart a permanent wave to the hair and means for preventing the swelling of the chemical.

6. Means for waving hair including a chemical which when moistened, will generate suficient heat to impart a permanent .wave to the hair, and means, comprising a suitable salt, for preventing the swelling of the chemical. a

7. Means for waving hair including a chemical which, when moistened, will generate sufficient heat to impart a permanent wave to the hair and means for preventing the swelling of the chemical, said 'means including ammonium sulphate.

8. Means for waving hair including a chemical which, when moistened, will generate sufiicient heat to impart a permanent 

